すかさず の訳語→ already automatically immediately instantly promptly quick quickly simultaneously straight
すらすらと の訳語→ fast lucidly readily silkily smooth
つつがなく の訳語→ nicely officially routinely safely
やんわり の訳語→ delicately diplomatically gently lightly mildly politely slightly softly
よどみなく の訳語→ comfortably flowingly rolling
楽々と の訳語→ effortlessly
苦もなく の訳語→ clear effortless simply
順調に の訳語→ right smoothness successfully